<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>注册 - Creeps Judge</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        
        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(circle at 20% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(100, 150, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 40%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
            pointer-events: none;
            z-index: -1;
        }
        
        .signup-container {
            background: linear-gradient(135deg, rgba(0, 0, 0, 0.8) 0%, rgba(30, 30, 60, 0.9) 100%);
            -webkit-backdrop-filter: blur(15px);
            backdrop-filter: blur(15px);
            padding: 3rem;
            border-radius: 20px;
            box-shadow: 
                0 8px 32px rgba(0, 0, 0, 0.3),
                0 0 20px rgba(100, 150, 255, 0.2),
                inset 0 0 15px rgba(255, 255, 255, 0.05);
            width: 100%;
            max-width: 450px;
            border: 2px solid;
            border-image: linear-gradient(135deg, rgba(255, 255, 255, 0.4), rgba(100, 150, 255, 0.6)) 1;
            position: relative;
            overflow: hidden;
        }
        
        .signup-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
            transition: left 0.5s ease;
        }
        
        .signup-container:hover::before {
            left: 100%;
        }
        
        .signup-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        
        .signup-header h1 {
            font-size: 2.5rem;
            background: linear-gradient(135deg, #00d4ff, #6496ff, #ffffff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
            text-shadow: 
                0 0 5px rgba(0, 212, 255, 0.4),
                0 0 10px rgba(0, 212, 255, 0.3),
                0 0 15px rgba(0, 212, 255, 0.2);
            filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.3));
        }
        
        .signup-header p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.1rem;
            margin: 0;
        }
        .form-group {
            margin-bottom: 1.5rem;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.75rem;
            color: rgba(255, 255, 255, 0.9);
            font-weight: 500;
            font-size: 1rem;
        }
        
        .form-group input {
            width: 100%;
            padding: 1rem;
            background: rgba(255, 255, 255, 0.1);
            border: 2px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            font-size: 1rem;
            color: white;
            transition: all 0.3s ease;
            box-sizing: border-box;
            backdrop-filter: blur(10px);
        }
        
        .form-group input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        
        .form-group input:focus {
            outline: none;
            border-color: rgba(100, 150, 255, 0.8);
            background: rgba(255, 255, 255, 0.15);
            box-shadow: 
                0 0 15px rgba(100, 150, 255, 0.3),
                inset 0 0 10px rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }
        
        .help-text {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 0.5rem;
            line-height: 1.4;
        }
        .btn {
            width: 100%;
            padding: 1rem;
            background: linear-gradient(135deg, rgba(100, 150, 255, 0.8), rgba(0, 212, 255, 0.8));
            color: white;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 12px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(10px);
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
            transition: left 0.5s ease;
        }
        
        .btn:hover {
            background: linear-gradient(135deg, rgba(100, 150, 255, 1), rgba(0, 212, 255, 1));
            border-color: rgba(255, 255, 255, 0.8);
            transform: perspective(500px) rotateX(5deg) rotateY(5deg) translateZ(10px) translateY(-3px);
            box-shadow: 
                0 10px 25px rgba(0, 0, 0, 0.3),
                0 0 30px rgba(100, 150, 255, 0.4),
                0 0 15px rgba(255, 255, 255, 0.2);
        }
        
        .btn:hover::before {
            left: 100%;
        }
        
        .btn:active {
            transform: perspective(500px) rotateX(2deg) rotateY(2deg) translateZ(5px) translateY(-1px);
        }
        .links {
            text-align: center;
            margin-top: 2rem;
        }
        
        .links p {
            color: rgba(255, 255, 255, 0.7);
            margin: 0;
        }
        
        .links a {
            color: #6496ff;
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(135deg, #6496ff, #00d4ff);
            transition: width 0.3s ease;
        }
        
        .links a:hover {
            color: #00d4ff;
            text-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
        }
        
        .links a:hover::after {
            width: 100%;
        }
        .messages {
            margin-bottom: 1.5rem;
        }
        
        .alert {
            padding: 1rem;
            border-radius: 12px;
            margin-bottom: 1rem;
            backdrop-filter: blur(10px);
            border: 1px solid;
            position: relative;
            overflow: hidden;
        }
        
        .alert::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
            transition: left 0.5s ease;
        }
        
        .alert:hover::before {
            left: 100%;
        }
        
        .alert-success {
            background: rgba(40, 167, 69, 0.2);
            color: #6bcf7f;
            border-color: rgba(40, 167, 69, 0.4);
            box-shadow: 0 4px 15px rgba(40, 167, 69, 0.2);
        }
        
        .alert-error {
            background: rgba(220, 53, 69, 0.2);
            color: #ff6b7a;
            border-color: rgba(220, 53, 69, 0.4);
            box-shadow: 0 4px 15px rgba(220, 53, 69, 0.2);
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .signup-container {
                margin: 1rem;
                padding: 2rem;
                max-width: none;
            }
            
            .signup-header h1 {
                font-size: 2rem;
            }
            
            body {
                overflow: auto;
            }
        }
    </style>
</head>
<body>
    <div class="signup-container">
        <div class="signup-header">
            <h1>注册</h1>
            <p>加入 Creeps Judge 社区</p>
        </div>

        {% if messages %}
            <div class="messages">
                {% for message in messages %}
                    <div class="alert alert-{{ message.tags }}">
                        {{ message }}
                    </div>
                {% endfor %}
            </div>
        {% endif %}

        {% if form.errors %}
            <div class="alert alert-error">
                {% for field, errors in form.errors.items %}
                    {% for error in errors %}
                        <p>{{ error }}</p>
                    {% endfor %}
                {% endfor %}
            </div>
        {% endif %}

        <form method="post">
            {% csrf_token %}
            <div class="form-group">
                <label for="{{ form.username.id_for_label }}">用户名:</label>
                {{ form.username }}
                {% if form.username.help_text %}
                    <div class="help-text">{{ form.username.help_text }}</div>
                {% endif %}
            </div>
            <div class="form-group">
                <label for="{{ form.password1.id_for_label }}">密码:</label>
                {{ form.password1 }}
                {% if form.password1.help_text %}
                    <div class="help-text">{{ form.password1.help_text }}</div>
                {% endif %}
            </div>
            <div class="form-group">
                <label for="{{ form.password2.id_for_label }}">确认密码:</label>
                {{ form.password2 }}
                {% if form.password2.help_text %}
                    <div class="help-text">{{ form.password2.help_text }}</div>
                {% endif %}
            </div>
            <button type="submit" class="btn">注册</button>
        </form>

        <div class="links">
            <p>已有账户？ <a href="{% url 'accounts:login' %}">立即登录</a></p>
        </div>
    </div>
</body>
</html>